SELENIUM Meaning and
Definition
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Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal that belongs to the oxygen group of elements in the periodic table. Selenium is typically found in nature as a rare mineral, but it can also be produced synthetically. It exists in several forms, including a red powder and a gray crystalline solid.
In terms of its properties, selenium is known for its semiconductor characteristics, which means it can conduct electricity under certain conditions. It has a high electrical conductivity, but it also has a photoconductive effect, which means its conductivity increases when exposed to light. This property makes selenium useful in various electronic and photovoltaic applications.
Selenium also plays an important role in biological systems. It is an essential trace element that is necessary for the proper functioning of various enzymes and proteins in the body. Selenium is involved in different physiological processes, such as the production of thyroid hormones, DNA synthesis, and immune function.
Due to its potential health benefits, selenium is often used as a dietary supplement. Adequate selenium intake is believed to have antioxidant properties that protect cells from damage caused by free radicals. It is also associated with a reduced risk of certain diseases, including some forms of cancer and cardiovascular conditions.
Overall, selenium is a versatile element that has applications in various scientific, technological, and medical fields. Its unique properties and role in biological systems make it an important element of study and exploration.
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A metallic element, symbol Se, atomic weight 79.2, having some chemical similarity to sulphur.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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An elementary substance, having somewhat the appearance of lead, but brittle, and of a dark reddish-brown colour, chemically allied to sulphur-so called in.illusion to its analogies to tellurium.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for SELENIUM
Etymology of SELENIUM
The word "selenium" is derived from the Greek word "selḗnē", meaning moon. This is in reference to the element's resemblance to tellurium, which is named after the Latin word "tellūs" meaning earth. Selenium and tellurium were both discovered by Baron Franz-Joseph Müller in 1817. The choice of names was influenced by the belief that the Earth was associated with tellurium, and the Moon was associated with its similarity, selenium.
Similar spelling word for SELENIUM
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